Method set___cause__

crates/vm/src/exceptions.rs:638–642

(&self, cause: Option<PyRef<Self>>)

    #[pygetset(setter)]
    pub fn set___cause__(&self, cause: Option<PyRef<Self>>) {
        let mut c = self.cause.write();
        self.set_suppress_context(true);
        *c = cause;
    }

    #[pygetset]
    pub fn __context__(&self) -> Option<PyRef<Self>> {